388 



THE PRACTICAL GARDENER. 



These sheets may be of any convenient length, and made to 

 cover one or more trees, as may be required. If the trees be 

 pLanted according to their several kinds, as we have recom- 

 mended, then the whole space may be covered with one or 

 more pieces of this covering, and will be more convenient 

 than if the trees were scattered about on different parts ot 

 the walls. In using these screens in either of the above forms, 

 the trees arc always to be exposed to the light and air, in 

 good weather, through the day, covering only at night and 

 in bad weather, applying them from the time the buds begin 

 to open, till tlie fruit be fairlv set, or till all danger from the 

 effects of frost be past. 



A frame for the protection of fruit-trees on walls has been 

 invented by Mr. John Dick, gardener at Ballindean, in Perth- 

 shire, which althou.c^h at first sight may appear rather intri- 

 cate, yet will be easily understood by the accompanying sketch. 



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It is made of thin semi-transparent canvass, about 36 inches 

 broad. The edges and seams of the screen are bound with 

 tape, and it runs on two wires placed at top and bottom of the 

 frame, and kept tight by screws at the exti'cmities. 



